Digit Frequency | aCoding | Day 11

Problem: 

1. You are given a number n.
2. You are given a digit d.
3. You are required to calculate the frequency of digit d in number n.

Input Format

A number n
A digit d

Output Format

A number representing frequency of digit d in number n.

Constraints
0 <= n <= 10^9
0 <= d <= 9
  
Sample Input
994543234
 4
Sample Output
3

Solution:

import java.util.*;

public class Main {

    public static void main(String[] args) {

        Scanner scn = new Scanner(System.in);

        int n = scn.nextInt();

        int d = scn.nextInt();

        int f = getDigitFrequency(n, d);

        System.out.println(f);

    }

    public static int getDigitFrequency(int n, int d) {

        // write code here

        int count = 0;

        while(n > 0){

            if((n%10)==d)

                ++count;

            n /= 10;

        }

        return count;

    }

}